soo as weve seen in the finale, ozai single handedly burned the whole forest down. that was sozin's comet. the comet enhanced the firebending power.

and for waterbenders, in full moon, they can blood bend, and they are more powerful at full moon.

but how about airbenders, and earth benders?

air and earth is every where. do you think certain events make them more powerful?

in example,

for airbenders, hurricane or tornado

for earthbenders, earthquake.

feel free to express your ideas and creativity.

They don't have them.

Sozin's Comet only comes once every roughly 100 years, and the full moon is a single 12 hour cycle one every fortnight.

Hardly a serious advantage when you look at it.

Sure, the comet caused the untimely end to the Air Nomads, but that was once in a hundred years.

How would a hurricane or a tornado do anything for an airbender? They are a bit more common then full moons or comets are, plus airbenders are probably capable of creating both...

The same goes for earthbenders, they could probably create earthquakes themselves too. They probably wouldn't benefit from those.

I don't really think airbenders or earthbenders even have a special event or time. Besides, why would they need that? I think earth and air can probably be the two most destructive elements at their strongest.

earth benders are the most powerful.. and air benders are the weakest really

Air benders really can't destroy buildings and kill people and earth benders can make huge walls to protect themselves and knock people around with rocks.

Lets us remember exactly why Sozin's Comet and the Full Moon grant Firebenders and Waterbenders great strength.

Firebending, by and large, is all about the manipulation of energy, mostly energy from the sun. Sozin's Comet provides A LOt of energy - as well as the masses of heat and flames coming off it, there is also the fact that a large meteor has enough energy to match several thousand atomic bombs. That is a lot of energy for Firebenders to manipulate. So basically, Sozin's Comet adds lots of energy to the energy that Firebenders already draw from the sun.

Waterbenders draw their power from the moon. It is that simple. Ergo, when the moon is full, they are going to be more powerful than when it is not full. Simple enough.

So basically, Airbending and Earthbending will be increased in power by natural events that add to/increase whatever source the air/earthbenders already draw their power from. Of course, thus far we have no idea what the Air and Earth benders draw their power from. Once we figure that out, we'll know what needs to be increased for them to have a power upgrade.

Hmm...As long as an Earthbender is surrounded by Earth, they can take on pretty much anything. Although it is a weakness that they might not always have ample supplies of earth. They can easily protect themselves from any element, and can dominate anyone who doesnt know how to face an earthbender. Toph actually taught Aang how to see through earthbending. You see Aang doing this in The Runaway and in the finale. If Toph can teach this ability, then isnt it also possible for Toph to teach other earthbenders how to metal-bend? Not to mention the other variation, sandbending. When you combine all of this, I'm not really sure a special event is really needed.

As for Airbenders, its extremely hard to defeat them, considering they can just evade pretty much everything, and then corner you and prevent you from bending with intense wind. An airbender can also manipulate small amounts of earth to throw at enemies. An extremely powerful airbender can create wind strong enough to break right through solid rock. Considering that they can fly around, evade, and even manipulate certain other elements, I dont think they really need a special event. Besides, Airbenders arent inclined to fighting, so extreme power isnt really needed.

I can't really think of a special event for an Earthbender, an Earthquake would probably just weaken them. Maybe strong winds might help Airbenders with the intensity of their blasts though.

Waterbenders rise with the moon. Firebenders rise with the sun. They have non-earthbound events that make their bending strength ebb and flow. Airbenders would be strongest where air currents are naturally strong, and not as strong where the air is thin, and earthbenders are strongest where earth is concentrated, and not as strong where the earth is more spread out.